public class TwoDimensionalArray04 {
	public static void main(String[] args){
		int[][] arr = {{4,6},{1,4,5,7},{-2}};
		int sum = 0;
		for(int i = 0; i < arr.length; i++){
			for(int j = 0; j < arr[i].length; j++){
				sum+=arr[i][j];
			}
		}
		System.out.println("sum = " + sum);
	}
}